Dengue infections are off the chart this year, and it pays to know the dangers. Do you? ARE YOU SURE? Greg interviews Dr. Vorapot, an expert in travel medicine and in particular tropical diseases such as dengue fever. Greg and Dr. V review the scary data on the increases in dengue cases in Thailand, noting that different types of mosquitoes breed in different environments. Luckily, the type that carries malaria tends to breed in clean water in the jungle, but other types can breed in cities such as Bangkok, especially during the rainy season.